//-------------------------------------------------------------------------------------------------------------
// Draw the links for the subtree rooted at this node.
//
private void DrawSubtreeLinks(Graphics gr)
{
MyPen.Color = Color.Black;
MyPen.Width = 1;
int capacity = Data.RightLinksAnchorNumber;
//float offset = IDrawable.LinkerSize.Y * (capacity / 2);
float anchorWidth = IDrawable.LinkerSize.X;
float anchorHeight = IDrawable.LinkerSize.Y;
//SizeF size = Data.getSize(gr, MyFont);
float x0 = m_pos.X;
float x1 = m_pos.X + m_size.Width;
float y0 = m_pos.Y;
float y1 = m_pos.Y + m_size.Height;
// TODO : left anchor (do not draw link cause drawn from left to right)
if (Data.leftNumber != 0)
{
gr.DrawRectangle(MyPen, x0 - anchorWidth, (y0 + y1 - anchorHeight) / 2, anchorWidth, anchorHeight);
}
int index = 0;
for (; index < Data.rightNumber; index++)
{
GraphTreeNode <T> child = Children[index];
float yAnchor = y0 + Data.getRightAnchorY(m_size.Height, index);
float xOut = x1 + anchorWidth;
float yOut = yAnchor + anchorHeight / 2;
SizeF sizeChild = child.Data.getSize(gr, MyFont);
PointF center = child.getCenter();
float xIn = center.X - sizeChild.Width / 2 - anchorWidth;
float yIn = center.Y;
float deltaX = (xIn - xOut) / 2;
GraphicsPath path = new GraphicsPath();
path.AddBezier(xOut, yOut, xOut + deltaX, yOut, xIn - deltaX, yIn, xIn, yIn);
gr.DrawPath(MyPen, path);
gr.DrawRectangle(MyPen, x1, yAnchor, anchorWidth, anchorHeight);
float x = (xOut + xIn) / 2;
float y = (yOut + yIn) / 2;
gr.FillEllipse(Brushes.Yellow, x - 3, y - 3, 6, 6);
gr.DrawEllipse(MyPen, x - 3, y - 3, 6, 6);
// Recursively make the child draw its subtree nodes.
child.DrawSubtreeLinks(gr);
}
for (; index < capacity; index++)
{
PointF linkOut = new PointF(x1, y0 + Data.getRightAnchorY(m_size.Height, index));
gr.DrawRectangle(penAddingNode, linkOut.X, linkOut.Y, anchorWidth, anchorHeight);
}
}
